TY - RPRT TI - Evaluating drivers of environmental change in a lake sediment core: Insights from spectroscopic metrics of water-extractable organic matter and stable carbon isotopes AU - A.C. Collins AU - Sabina R. Gifford AU - Morgan Schaller AU - Aron Stubbins AU - Sasha Wagner AU - Kevin Alexander Ryan PY - 2026 DO - 10.1016/j.apgeochem.2026.106768 UR - https://pubs.usgs.gov/publication/70274249 ID - 70274249 ER -